| 摘要 |
<p>PROBLEM TO BE SOLVED: To remove a top cover at low cost and easily with a simple structure. SOLUTION: This top cover removing device is provided with a top cover 3 for closing the top of a tank 1 of a gas isolation opening/closing apparatus, a hand hole at the side of the tank 1 beneath the top cover 3, a side body 14 which is mounted on the hand hole and on which a supporting body 6 for supporting a spindle 8 is mounted, the spindle 8 rotatably supported on the supporting body 6, a pulling body 15 mounted on the top end of the spindle 8 and positioned a little above the top cover 3, and a screw body 19 inserted into an insertion hole 18 in the pulling body 15 and screwed onto a threaded hole 17 of the top cover 3 and moving up the top cover 3 by rotation.</p> |
